I'm writing a REST web app (NetBeans 6.9, JAX-RS, TopLink Essentials) and trying to return JSON and HTTP status code. I have code ready and working that returns JSON when the HTTP GET method is called from the client. Essentially:
#Path("get/id")
#GET
#Produces("application/json")
public M_機械 getMachineToUpdate(#PathParam("id") String id) {
// some code to return JSON ...
return myJson;
}
But I also want to return an HTTP status code (500, 200, 204, etc.) along with the JSON data.
I tried to use HttpServletResponse:
response.sendError("error message", 500);
But this made the browser think it's a "real" 500 so the output web page was a regular HTTP 500 error page.
I want to return an HTTP status code so that my client-side JavaScript can handle some logic depending on it (to e.g. display the error code and message on an HTML page). Is this possible or should HTTP status codes not be used for such thing?
Here's an example:
#GET
#Path("retrieve/{uuid}")
public Response retrieveSomething(#PathParam("uuid") String uuid) {
if(uuid == null || uuid.trim().length() == 0) {
return Response.serverError().entity("UUID cannot be blank").build();
}
Entity entity = service.getById(uuid);
if(entity == null) {
return Response.status(Response.Status.NOT_FOUND).entity("Entity not found for UUID: " + uuid).build();
}
String json = //convert entity to json
return Response.ok(json, MediaType.APPLICATION_JSON).build();
}
Take a look at the Response class.
Note that you should always specify a content type, especially if you are passing multiple content types, but if every message will be represented as JSON, you can just annotate the method with #Produces("application/json")
There are several use cases for setting HTTP status codes in a REST web service, and at least one was not sufficiently documented in the existing answers (i.e. when you are using auto-magical JSON/XML serialization using JAXB, and you want to return an object to be serialized, but also a status code different than the default 200).
So let me try and enumerate the different use cases and the solutions for each one:
1. Error code (500, 404,...)
The most common use case when you want to return a status code different than 200 OK is when an error occurs.
For example:
an entity is requested but it doesn't exist (404)
the request is semantically incorrect (400)
the user is not authorized (401)
there is a problem with the database connection (500)
etc..
a) Throw an exception
In that case, I think that the cleanest way to handle the problem is to throw an exception. This exception will be handled by an ExceptionMapper, that will translate the exception into a response with the appropriate error code.
You can use the default ExceptionMapper that comes pre-configured with Jersey (and I guess it's the same with other implementations) and throw any of the existing sub-classes of javax.ws.rs.WebApplicationException. These are pre-defined exception types that are pre-mapped to different error codes, for example:
BadRequestException (400)
InternalServerErrorException (500)
NotFoundException (404)
Etc. You can find the list here: API
Alternatively, you can define your own custom exceptions and ExceptionMapper classes, and add these mappers to Jersey by the mean of the #Provider annotation (source of this example):
public class MyApplicationException extends Exception implements Serializable
{
private static final long serialVersionUID = 1L;
public MyApplicationException() {
super();
}
public MyApplicationException(String msg) {
super(msg);
}
public MyApplicationException(String msg, Exception e) {
super(msg, e);
}
}
Provider :
#Provider
public class MyApplicationExceptionHandler implements ExceptionMapper<MyApplicationException>
{
#Override
public Response toResponse(MyApplicationException exception)
{
return Response.status(Status.BAD_REQUEST).entity(exception.getMessage()).build();
}
}
Note: you can also write ExceptionMappers for existing exception types that you use.
b) Use the Response builder
Another way to set a status code is to use a Response builder to build a response with the intended code.
In that case, your method's return type must be javax.ws.rs.core.Response. This is described in various other responses such as hisdrewness' accepted answer and looks like this :
#GET
#Path("myresource({id}")
public Response retrieveSomething(#PathParam("id") String id) {
...
Entity entity = service.getById(uuid);
if(entity == null) {
return Response.status(Response.Status.NOT_FOUND).entity("Resource not found for ID: " + uuid).build();
}
...
}
2. Success, but not 200
Another case when you want to set the return status is when the operation was successful, but you want to return a success code different than 200, along with the content that you return in the body.
A frequent use case is when you create a new entity (POST request) and want to return info about this new entity or maybe the entity itself, together with a 201 Created status code.
One approach is to use the response object just like described above and set the body of the request yourself. However, by doing this you loose the ability to use the automatic serialization to XML or JSON provided by JAXB.
This is the original method returning an entity object that will be serialized to JSON by JAXB:
#Path("/")
#POST
#Consumes({ MediaType.APPLICATION_JSON })
#Produces({ MediaType.APPLICATION_JSON })
public User addUser(User user){
User newuser = ... do something like DB insert ...
return newuser;
}
This will return a JSON representation of the newly created user, but the return status will be 200, not 201.
Now the problem is if I want to use the Response builder to set the return code, I have to return a Response object in my method. How do I still return the User object to be serialized?
a) Set the code on the servlet response
One approach to solve this is to obtain a servlet request object and set the response code manually ourselves, like demonstrated in Garett Wilson's answer :
#Path("/")
#POST
#Consumes({ MediaType.APPLICATION_JSON })
#Produces({ MediaType.APPLICATION_JSON })
public User addUser(User user, #Context final HttpServletResponse response){
User newUser = ...
//set HTTP code to "201 Created"
response.setStatus(HttpServletResponse.SC_CREATED);
try {
response.flushBuffer();
}catch(Exception e){}
return newUser;
}
The method still returns an entity object and the status code will be 201.
Note that to make it work, I had to flush the response. This is an unpleasant resurgence of low-level Servlet API code in our nice JAX_RS resource, and much worse, it causes the headers to be unmodifiable after this because they were already sent on the wire.
b) Use the response object with the entity
The best solution, in that case, is to use the Response object and set the entity to be serialized on this response object. It would be nice to make the Response object generic to indicate the type of the payload entity in that case, but is not the currently the case.
#Path("/")
#POST
#Consumes({ MediaType.APPLICATION_JSON })
#Produces({ MediaType.APPLICATION_JSON })
public Response addUser(User user){
User newUser = ...
return Response.created(hateoas.buildLinkUri(newUser, "entity")).entity(restResponse).build();
}
In that case, we use the created method of the Response builder class in order to set the status code to 201. We pass the entity object (user) to the response via the entity() method.
The result is that the HTTP code is 401 as we wanted, and the body of the response is the exact same JSON as we had before when we just returned the User object. It also adds a location header.
The Response class has a number of builder method for different statuses (stati ?) such as :
Response.accepted()
Response.ok()
Response.noContent()
Response.notAcceptable()
NB: the hateoas object is a helper class that I developed to help generate resources URIs. You will need to come up with your own mechanism here ;)
That's about it.
I hope this lengthy response helps somebody :)
The answer by hisdrewness will work, but it modifies the whole approach to letting a provider such as Jackson+JAXB automatically convert your returned object to some output format such as JSON. Inspired by an Apache CXF post (which uses a CXF-specific class) I've found one way to set the response code that should work in any JAX-RS implementation: inject an HttpServletResponse context and manually set the response code. For example, here is how to set the response code to CREATED when appropriate.
#Path("/foos/{fooId}")
#PUT
#Consumes("application/json")
#Produces("application/json")
public Foo setFoo(#PathParam("fooID") final String fooID, final Foo foo, #Context final HttpServletResponse response)
{
//TODO store foo in persistent storage
if(itemDidNotExistBefore) //return 201 only if new object; TODO app-specific logic
{
response.setStatus(Response.Status.CREATED.getStatusCode());
}
return foo; //TODO get latest foo from storage if needed
}
Improvement: After finding another related answer, I learned that one can inject the HttpServletResponse as a member variable, even for singleton service class (at least in RESTEasy)!! This is a much better approach than polluting the API with implementation details. It would look like this:
#Context //injected response proxy supporting multiple threads
private HttpServletResponse response;
#Path("/foos/{fooId}")
#PUT
#Consumes("application/json")
#Produces("application/json")
public Foo setFoo(#PathParam("fooID") final String fooID, final Foo foo)
{
//TODO store foo in persistent storage
if(itemDidNotExistBefore) //return 201 only if new object; TODO app-specific logic
{
response.setStatus(Response.Status.CREATED.getStatusCode());
}
return foo; //TODO get latest foo from storage if needed
}
If you like to keep your resource layer clean of Response objects, then I recommend you use #NameBinding and binding to implementations of ContainerResponseFilter.
Here's the meat of the annotation:
package my.webservice.annotations.status;
import javax.ws.rs.NameBinding;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
#NameBinding
#Retention(RetentionPolicy.RUNTIME)
public #interface Status {
int CREATED = 201;
int value();
}
Here's the meat of the filter:
package my.webservice.interceptors.status;
import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerResponseContext;
import javax.ws.rs.container.ContainerResponseFilter;
import javax.ws.rs.ext.Provider;
import java.io.IOException;
#Provider
public class StatusFilter implements ContainerResponseFilter {
#Override
public void filter(ContainerRequestContext containerRequestContext, ContainerResponseContext containerResponseContext) throws IOException {
if (containerResponseContext.getStatus() == 200) {
for (Annotation annotation : containerResponseContext.getEntityAnnotations()) {
if(annotation instanceof Status){
containerResponseContext.setStatus(((Status) annotation).value());
break;
}
}
}
}
}
And then the implementation on your resource simply becomes:
package my.webservice.resources;
import my.webservice.annotations.status.StatusCreated;
import javax.ws.rs.*;
#Path("/my-resource-path")
public class MyResource{
#POST
#Status(Status.CREATED)
public boolean create(){
return true;
}
}
I found it very useful to build also a json message with repeated code, like this:
#POST
#Consumes("application/json")
#Produces("application/json")
public Response authUser(JsonObject authData) {
String email = authData.getString("email");
String password = authData.getString("password");
JSONObject json = new JSONObject();
if (email.equalsIgnoreCase(user.getEmail()) && password.equalsIgnoreCase(user.getPassword())) {
json.put("status", "success");
json.put("code", Response.Status.OK.getStatusCode());
json.put("message", "User " + authData.getString("email") + " authenticated.");
return Response.ok(json.toString()).build();
} else {
json.put("status", "error");
json.put("code", Response.Status.NOT_FOUND.getStatusCode());
json.put("message", "User " + authData.getString("email") + " not found.");
return Response.status(Response.Status.NOT_FOUND).entity(json.toString()).build();
}
}
In case you want to change the status code because of an exception, with JAX-RS 2.0 you can implement an ExceptionMapper like this. This handles this kind of exception for the whole app.
#Provider
public class UnauthorizedExceptionMapper implements ExceptionMapper<EJBAccessException> {
#Override
public Response toResponse(EJBAccessException exception) {
return Response.status(Response.Status.UNAUTHORIZED.getStatusCode()).build();
}
}
If your WS-RS needs raise an error why not just use the WebApplicationException?
#GET
#Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
#Path("{id}")
public MyEntity getFoo(#PathParam("id") long id, #QueryParam("lang")long idLanguage) {
if (idLanguage== 0){
// No URL parameter idLanguage was sent
ResponseBuilder builder = Response.status(Response.Status.BAD_REQUEST);
builder.entity("Missing idLanguage parameter on request");
Response response = builder.build();
throw new WebApplicationException(response);
}
... //other stuff to return my entity
return myEntity;
}
JAX-RS has support for standard/custom HTTP codes. See ResponseBuilder and ResponseStatus, for example:
http://jackson.codehaus.org/javadoc/jax-rs/1.0/javax/ws/rs/core/Response.ResponseBuilder.html#status%28javax.ws.rs.core.Response.Status%29
Keep in mind that JSON information is more about the data associated with the resource/application. The HTTP codes are more about the status of the CRUD operation being requested. (at least that is how it's supposed to be in REST-ful systems)
Please look at the example here, it best illustrates the problem and how it is solved in the latest (2.3.1) version of Jersey.
https://jersey.java.net/documentation/latest/representations.html#d0e3586
It basically involves defining a custom Exception and keeping the return type as the entity. When there is an error, the exception is thrown, otherwise, you return the POJO.
I'm not using JAX-RS, but I've got a similar scenario where I use:
response.setStatus(HttpStatus.INTERNAL_SERVER_ERROR.value());
Also, notice that by default Jersey will override the response body in case of an http code 400 or more.
In order to get your specified entity as the response body, try to add the following init-param to your Jersey in your web.xml configuration file :
<init-param>
<!-- used to overwrite default 4xx state pages -->
<param-name>jersey.config.server.response.setStatusOverSendError</param-name>
<param-value>true</param-value>
</init-param>
The following code worked for me. Injecting the messageContext via annotated setter and setting the status code in my "add" method.
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import javax.ws.rs.Consumes;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.Response;
import org.apache.cxf.jaxrs.ext.MessageContext;
public class FlightReservationService {
MessageContext messageContext;
private final Map<Long, FlightReservation> flightReservations = new HashMap<>();
#Context
public void setMessageContext(MessageContext messageContext) {
this.messageContext = messageContext;
}
#Override
public Collection<FlightReservation> list() {
return flightReservations.values();
}
#Path("/{id}")
#Produces("application/json")
#GET
public FlightReservation get(Long id) {
return flightReservations.get(id);
}
#Path("/")
#Consumes("application/json")
#Produces("application/json")
#POST
public void add(FlightReservation booking) {
messageContext.getHttpServletResponse().setStatus(Response.Status.CREATED.getStatusCode());
flightReservations.put(booking.getId(), booking);
}
#Path("/")
#Consumes("application/json")
#PUT
public void update(FlightReservation booking) {
flightReservations.remove(booking.getId());
flightReservations.put(booking.getId(), booking);
}
#Path("/{id}")
#DELETE
public void remove(Long id) {
flightReservations.remove(id);
}
}
Expanding on the answer of Nthalk with Microprofile OpenAPI you can align the return code with your documentation using #APIResponse annotation.
This allows tagging a JAX-RS method like
#GET
#APIResponse(responseCode = "204")
public Resource getResource(ResourceRequest request)
You can parse this standardized annotation with a ContainerResponseFilter
#Provider
public class StatusFilter implements ContainerResponseFilter {
#Override
public void filter(ContainerRequestContext requestContext, ContainerResponseContext responseContext) {
if (responseContext.getStatus() == 200) {
for (final var annotation : responseContext.getEntityAnnotations()) {
if (annotation instanceof APIResponse response) {
final var rawCode = response.responseCode();
final var statusCode = Integer.parseInt(rawCode);
responseContext.setStatus(statusCode);
}
}
}
}
}
A caveat occurs when you put multiple annotations on your method like
#APIResponse(responseCode = "201", description = "first use case")
#APIResponse(responseCode = "204", description = "because you can")
public Resource getResource(ResourceRequest request)
I'm using jersey 2.0 with message body readers and writers. I had my method return type as a specific entity which was also used in the implementation of the message body writer and i was returning the same pojo, a SkuListDTO.
#GET
#Consumes({"application/xml", "application/json"})
#Produces({"application/xml", "application/json"})
#Path("/skuResync")
public SkuResultListDTO getSkuData()
....
return SkuResultListDTO;
all i changed was this, I left the writer implementation alone and it still worked.
public Response getSkuData()
...
return Response.status(Response.Status.FORBIDDEN).entity(dfCoreResultListDTO).build();
In my endpoint, I have some methods with #GET and some methods with #POST. #GETs are working fine, but #POSTs always return 404.
Here is some part from the endpoint's interface:
public interface TestEndpoint {
#GET
#Path("/ping")
Response ping();
#POST
#Path("/weather/{iata}/{pointType}")
Response updateWeather(#PathParam("iata") String iataCode,
#PathParam("pointType") String pointType,
String datapointJson);
#POST
#Path("/airport/{iata}/{lat}/{long}")
Response addAirport(#PathParam("iata") String iata,
#PathParam("lat") String latString,
#PathParam("long") String longString);
#GET
#Path("/exit")
Response exit();
}
Here is the server initialization part:
public class TestServer {
private static final String BASE_URL = "http://localhost:9090/";
public static void main(String[] args) {
try {
final ResourceConfig resourceConfig = new ResourceConfig();
resourceConfig.register(TestEndpointImpl.class);
HttpServer server = GrizzlyHttpServerFactory.createHttpServer(URI.create(BASE_URL), resourceConfig, false);
Runtime.getRuntime().addShutdownHook(new Thread(() -> {
server.shutdownNow();
}));
HttpServerProbe probe = new HttpServerProbe.Adapter() {
public void onRequestReceiveEvent(HttpServerFilter filter, Connection connection, Request request) {
System.out.println(request.getRequestURI());
}
};
server.getServerConfiguration().getMonitoringConfig().getWebServerConfig().addProbes(probe);
server.start();
Thread.currentThread().join();
server.shutdown();
} catch (IOException | InterruptedException ex) {
Logger.getLogger(TestServer.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
where, TestEndpointImpl is an implementation of TestEndpoint (as the name implies) with class-level annotation #Path("/collect").
When I perform GET requests, it works fine. But POSTs are problematic. Corresponding methods are not called.
As a side note, probe prints both GET and POST requests as expected, so I am sure that requests reach the server and paths are ok.
Is there any suggestion?
EDIT: Some snippet from the implementation:
#Path("/collect")
public class TestEndpointImpl implements TestEndpoint {
...
#Override
public Response updateWeather(#PathParam("iata") String iataCode, #PathParam("pointType") String pointType,
String datapointJson) {
System.out.println("TRACE: " + datapointJson);
// do something and return a Response
}
...
}
The registered probe prints /collect/weather/BOS/wind, but updateWeather is not called.
Short answer
Copy the #POST and the #Path annotations to the method implementation. It will do the trick.
Long answer
The section regarding annotation inheritance of the JAX-RS 2.0 specification (the specification which Jersey is the reference implementation) is pretty clear. See the quote below:
3.6 Annotation Inheritance
JAX-RS annotations may be used on the methods and method parameters of a super-class or an implemented interface. Such annotations are inherited by a corresponding sub-class or implementation class method provided that the method and its parameters do not have any JAX-RS annotations of their own. Annotations on a super-class take precedence over those on an implemented interface. The precedence over conflicting annotations defined in multiple implemented interfaces is implementation specific. Note that inheritance of class or interface annotations is not supported.
If a subclass or implementation method has any JAX-RS annotations then all of the annotations on the superclass or interface method are ignored. E.g.:
public interface ReadOnlyAtomFeed {
#GET
#Produces("application/atom+xml")
Feed getFeed();
}
#Path("feed")
public class ActivityLog implements ReadOnlyAtomFeed {
public Feed getFeed() {...}
}
In the above, ActivityLog.getFeed inherits the #GET and #Produces annotations from the interface. Conversely:
#Path("feed")
public class ActivityLog implements ReadOnlyAtomFeed {
#Produces("application/atom+xml")
public Feed getFeed() {...}
}
In the above, the #GET annotation on ReadOnlyAtomFeed.getFeed is not inherited by ActivityLog.getFeed and it would require its own request method designator since it redefines the #Produces annotation.
For consistency with other Java EE specifications, it is recommended to always repeat annotations instead of relying on annotation inheritance.
That can also happen if the url is not in the correct format; for example you could have sent a request without the correct path parameters.
I have created a ClientHttpRequestInterceptor that I use to intercept all outgoing RestTemplate requests and responses. I would like to add the interceptor to all outgoing Feign requests/responses. Is there a way to do this?
I know that there is a feign.RequestInterceptor but with this I can only intercept the request and not the response.
There is a class FeignConfiguration that I found in Github that has the ability to add interceptors but I don't know in which maven dependency version it is.
A practical example of how to intercept the response in a Spring Cloud OpenFeign.
Create a custom Client by extending Client.Default as shown below:
public class CustomFeignClient extends Client.Default {
public CustomFeignClient(SSLSocketFactory sslContextFactory, HostnameVerifier hostnameVerifier) {
super(sslContextFactory, hostnameVerifier);
}
#Override
public Response execute(Request request, Request.Options options) throws IOException {
Response response = super.execute(request, options);
InputStream bodyStream = response.body().asInputStream();
String responseBody = StreamUtils.copyToString(bodyStream, StandardCharsets.UTF_8);
//TODO do whatever you want with the responseBody - parse and modify it
return response.toBuilder().body(responseBody, StandardCharsets.UTF_8).build();
}
}
Then use the custom Client in a configuration class:
public class FeignClientConfig {
public FeignClientConfig() { }
#Bean
public Client client() {
return new CustomFeignClient(null, null);
}
}
Finally, use the configuration class in a FeignClient:
#FeignClient(name = "api-client", url = "${api.base-url}", configuration = FeignClientConfig.class)
public interface ApiClient {
}
Good luck
If you want to use feign from spring cloud, use org.springframework.cloud:spring-cloud-starter-feign as your dependency coordinates. Currently the only way to modify the response is to implement your own feign.Client.
I have a webservice and from this webservice I should pass an obejct to an another service. I tried with #Pathparam and #QueryParam but Iam not getting the values in my service.
The code where I am passing the object is
public void MediatorCmpService() {
ClientConfig config = new DefaultClientConfig();
Client client = Client.create(config);
WebResource service = client.resource(getBaseURI());
boolean flag = validateConfig(iFGetResponse);
if (flag) {
CustomerData customerData = transformationPayload(iFGetResponse);
TrilliumxmlProducer tri=new TrilliumxmlProducer(customerData);
}
System.out.println(flag);
}
Here I am passing the customerData Object to my TrilliumxmlProducer Service. But this Object is not getting passed to the TrilliumxmlProducer service
The code for the TrilliumxmlProducer is
#Path("/generateTrillium")
public class TrilliumxmlProducer {
// This method is called if XMLis request
public TrilliumxmlProducer(CustomerData customerData) throws JAXBException {
getXML(customerData);
// TODO Auto-generated constructor stub
}
#GET
#Produces({ MediaType.APPLICATION_XML })
public CustomerData getXML(#QueryParam("customerData") CustomerData customerData) throws JAXBException {
System.out.println("--------2----------" + customerData.getREQUESTTYPE());
return customerData;
}
}
Here My object is giving nullpointer exception. Can anyone help me here
You do not seem to be passing a QueryParameter in your request.
A PathParam is used to extract data from the Path, ie "endpoint/{id}/help" then the PathParam "id" would return whatever is in between "endpoint/" and "/help".
A QueryParam is used to extract data from the Query, ie "endpoint/help?id=" then the QueryParam would return whatever you have instead of in youe request.
Although technically legal, you should try to avoid mixing and matching, and just use one or the other.
Edit
Also, while I'm not certain, I'm pretty confident that you can't/shouldn't use an object graph to pass around your rest resources.
I did some TDDs before, but they were just straightforward and simple.
However, I will implement a restful client and invoke a restful API of third parties (Twitter, or Jira).
I used Resteasy client framework to implement that. The code is:
public void invokePUT() {
ClientRequest request =
new ClientRequest("http://example.com/customers");
request.accept("application/xml");
ClientResponse<Customer> response = request.put(Customer.class);
try {
if (response.getStatus() != 201)
throw new RuntimeException("Failed!");
} finally {
response.releaseConnection();
}}
If I want to write a test for this method (should write test before implement this method), what kind of the code should I write.
For GET, I can test the return Entity is equals to my expected entity and for POST, I can test the created entity's id is not null.
But how about for PUT and DELETE. Thanks.
Try to use REST Assured testing framework. It is great tool for testing REST services. On their website you'll find tons of examples how to use it. Just use it together with JUnit or TestNG to check assertions and you are done.
Here's how I'd go about the problem in the short term:
1) Extract the request into a parameter to the method. invokePUT() now becomes:
public void invokePUT(ClientRequest request) {
request.accept("application/xml");
ClientResponse<Customer> response = request.put(Customer.class);
try {
if (response.getStatus() != 201)
throw new RuntimeException("Failed!");
} finally {
response.releaseConnection();
}
}
2) In your test, use a stubbed version of ClientRequest
#Test
public void sendsPayloadAsXml() {
StubbedClientRequest request = new StubbedClientRequest(new StubbedResponse());
restApi.invokePUT(request);
assertEquals("application/xml", request.acceptHeader);
}
#Test
public void makesTheCallUsingPut() {
StubbedClientRequest request = new StubbedClientRequest(new StubbedResponse());
restApi.invokePUT(request);
assertTrue(request.putWasCalled);
}
#Test
public void releasesTheConnectionWhenComplete() {
StubbedResponse success = new StubbedResponse();
StubbedClientRequest request = new StubbedClientRequest(success);
restApi.invokePUT(request);
assertTrue(success.connectionWasClosed);
}
#Test(expected = RuntimeException.class)
public void raisesAnExceptionWhenInvalidResponseReceived() {
StubbedClientRequest request = new StubbedClientRequest(new StubbedResponse(400));
restApi.invokePUT(request);
}
private static class StubbedClientRequest extends ClientRequest {
public String acceptHeader = "";
public boolean putWasCalled;
public ClientResponse response
public StubbedRequest(ClientResponse response) {
this.response = response;
}
#Override
public ClientResponse put(Class klass) {
putWasCalled = true;
return response;
}
#Override
public void accept(String header) {
acceptHeader += header;
}
}
private static class StubbedResponse extends ClientResponse {
public boolean connectionWasReleased;
public int status = 201;
public StubbedResponse(int status) {
this.status = status;
}
public StubbedResponse() { }
}
This may not be a perfect design (Handing the ClientRequest to the class and having the RestEasy stuff exposed to the outside world) but it's a start.
Hope that helps!
Brandon
i would inject mocked classes that test, if put and delete was called as intended (with expected parameters and so on). easymock or similar is good for that
(same with post and get)
EDIT:
in case you want to test the rest client, use dependency injection to inject the request, then use easymock to mock it like this (for example to test, if delete is called properly):
#Test void myTest(){
ClientRequest mock = EasyMock.createMock(ClientRequest.class);
mock.delete(2); //test if resource with id=2 is deleted or something similar
EasyMock.replay(mock);
invokeDelete(mock);
EasyMock.verify(mock);
}